001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2008-2011 SonarSource
004     * mailto:contact AT sonarsource DOT com
005     *
006     * Sonar is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 3 of the License, or (at your option) any later version.
010     *
011     * Sonar is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public
017     * License along with Sonar; if not, write to the Free Software
018     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
019     */
020    package org.sonar.core.classloaders;
021    
022    import org.apache.commons.lang.StringUtils;
023    
024    import com.google.common.collect.Lists;
025    
026    import java.net.URL;
027    import java.net.URLClassLoader;
028    import java.util.Collection;
029    
030    /**
031     * This class loader is used to load resources from a list of URLs - see SONAR-1861.
032     */
033    public class ResourcesClassLoader extends URLClassLoader {
034      private Collection<URL> urls;
035    
036      public ResourcesClassLoader(Collection<URL> urls, ClassLoader parent) {
037        super(new URL[] {}, parent);
038        this.urls = Lists.newArrayList(urls);
039      }
040    
041      @Override
042      public URL findResource(String name) {
043        for (URL url : urls) {
044          if (StringUtils.endsWith(url.getPath(), name)) {
045            return url;
046          }
047        }
048        return null;
049      }
050    }